[syslinux] Boot ISO Using Memdisk on UEFI ONLY System

[Jane Todoroski]

Did you try disabling secure boot? That's the only way the CSM option will
appear in the UEFI menu. If it's not disabled, disable it and reboot, then
enter the UEFI/BIOS again and see if there is a CSM/Legacy option.

On Tue, May 12, 2020 at 11:13 PM David Balažic via Syslinux <
syslinux at syslinux.org> wrote:

> What ISOs are we talking about?
> If it is linux, they can usually be booted from UEFI.
>
> On Tue, 12 May 2020 at 19:10, Justin Rivers via Syslinux
> <syslinux at syslinux.org> wrote:
> >
> > Hello,
> > I'm sorry to bother, but was hoping that someone might be able to help me
> > with this situation. I have a multiboot that I've maintained now for
> years,
> > with no issues running on MBR or UEFI-CSM; however, I've now been tasked
> > with using this on newer Dell systems which do not allow any kind of MBR
> > booting whatsoever. I finally have my menu populating, but when any ISO
> > attempts to load, via memdisk, it just says "Ok..." and does nothing.
> Could
> > someone possibly assist me with getting ISO's loading, using memdisk, for
> > UEFI ONLY systems? I'm at a huge loss here, and I could really use help.
> > I'm even willing to over some compensation if anyone could assist me.
> Thank
> > you VERY much for your time in advance!
> >
> > Cordially,
> > Justin
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